After the HRSG is shut down, in order to reduce the corrosion of the HRSG, it is necessary to maintain the HRSG. Because when the thermal equipment is out of operation, the temperature and pressure in the water and gas system gradually drop, the steam condenses, and the air penetrates into it in large quantities from the imperfect part of the equipment, and the oxygen dissolves in the water, which is easy to cause corrosion in the waste heat boiler. So how should we properly do the daily maintenance of the waste heat boiler?
1.Regularly carry out manual tests on the safety valve and calibrate its working pressure, generally once a year, and calibrate by the security inspection department above the district and city.
2.Regularly and irregularly inspect the appearance of the boiler and lifting lugs to prevent corrosion and cracking. Lifting lugs and hoisting have the phenomenon of hanging open, which should be maintained and dealt with in time.
3.Check the integrity of the three major accessories of the boiler every shift. That is, pressure gauge, water level gauge, safety valve, make it accurate, lively, easy to use.
4.Henan horizontal heat recovery boiler production plant recommends that the air tightness of the waste heat boiler system be checked frequently, so as not to run, run, drip and leak. Check the valves of each water supply line to make them flexible and easy to use, and check the flexibility of the steam valves to make the gas supply system functional.
In order to make the normal operation of the HRSG, the boiler will be maintained and overhauled once every six months or a year, and will be inspected once every three years. The maintenance of waste heat boiler needs to be carried out in accordance with some procedures and steps.
The maintenance of waste heat boiler is more important. A well-maintained waste heat boiler can extend its lifespan. Therefore, maintenance shutdown is an important measure to keep the boiler up and running. This is of great significance for slowing down the corrosion of the boiler and extending its service life.